Q: What are the prime factors of the number 20,082,240?

 A: 2, 3, 5, 19, 367

Why are those the prime factors of the number 20,082,240?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 20,082,240

20,082,240
Factor Arrows
210,041,120
Factor Arrows
25,020,560
Factor Arrows
22,510,280
Factor Arrows
21,255,140
Factor Arrows
2627,570
Factor Arrows
2313,785
Factor Arrows
3104,595
Factor Arrows
334,865
Factor Arrows
56,973
Factor Arrows
19367

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 5, 19, 367

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 19 x 367 = 20,082,240

This can also be written as 26 x 32 x 51 x 191 x 3671 = 20,082,240

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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